package com.spr.config;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.datatype.jdk8.Jdk8Module;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.fasterxml.jackson.module.paramnames.ParameterNamesModule;
import lombok.extern.slf4j.Slf4j;
import org.apache.ibatis.cache.CacheKey;
import org.apache.ibatis.executor.Executor;
import org.apache.ibatis.mapping.BoundSql;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.ParameterMapping;
import org.apache.ibatis.plugin.*;
import org.apache.ibatis.reflection.MetaObject;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.ResultHandler;
import org.apache.ibatis.session.RowBounds;
import org.apache.ibatis.type.TypeHandlerRegistry;
import org.springframework.stereotype.Component;

import java.text.DateFormat;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Properties;

@Intercepts({
        @Signature(type = Executor.class, method = "update", args = {MappedStatement.class, Object.class}),
        @Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class}),
        @Signature(type = Executor.class, method = "query", args = {MappedStatement.class, Object.class, RowBounds.class, ResultHandler.class, CacheKey.class, BoundSql.class})
})
//@Profile({"dev", "local", "test"})
@Slf4j
@Component
public class SqlPrintInterceptor implements Interceptor {

    private static final ObjectMapper map = new ObjectMapper().disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS)
            .registerModules(new ParameterNamesModule(), new Jdk8Module(), new JavaTimeModule())
            .configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false)
            .configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);


    public Object intercept(Invocation invocation) throws Throwable {
        //正常执行sql
        Object returnValue = null;
        long start = 0;
        long end = 0;
        start = System.currentTimeMillis();
        returnValue = invocation.proceed();
        end = System.currentTimeMillis();

        try {
            //sql解析模块，无论如何不影响sql正常执行
            MappedStatement mappedStatement = (MappedStatement) invocation.getArgs()[0];
            Object parameter = null;
            if (invocation.getArgs().length > 1) {
                parameter = invocation.getArgs()[1];
            }
            String sqlId = mappedStatement.getId();
            BoundSql boundSql;
            if (invocation.getArgs().length == 6) {
                boundSql = (BoundSql) invocation.getArgs()[5];
            } else {
                boundSql = mappedStatement.getBoundSql(parameter);
            }
            Configuration configuration = mappedStatement.getConfiguration();
            long time = (end - start);
            String sql = getSql(configuration, boundSql, sqlId, time);
            System.err.println(sql);
        } catch (Exception e) {
        }

        return returnValue;
    }

    public static String getSql(Configuration configuration, BoundSql boundSql, String sqlId, long time) {
        String sql = showSql(configuration, boundSql);
        StringBuilder str = new StringBuilder();
        str.append(sqlId);
        str.append(":");
        str.append("\n");
        str.append(sql);
        str.append("\n");
        str.append("Sql执行时间为");
        str.append(":");
        str.append(time);
        str.append("ms");
        return str.toString();
    }

    private static String getParameterValue(Object obj) {
        String value = null;
        if (obj instanceof String) {
            value = "'" + obj.toString() + "'";
        } else if (obj instanceof Date) {
            DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.DEFAULT, DateFormat.DEFAULT, Locale.CHINA);
            value = "'" + formatter.format(obj) + "'";
        } else {
            if (obj != null) {
                try {
                    value = map.writeValueAsString(obj);
                } catch (JsonProcessingException e) {
                    // e.printStackTrace();
                    throw new RuntimeException(e);
                }
                //value = obj.toString();
            } else {
                value = "";
            }

        }
        return value;
    }

    public static String showSql(Configuration configuration, BoundSql boundSql) {
        Object parameterObject = boundSql.getParameterObject();
        List<ParameterMapping> parameterMappings = boundSql.getParameterMappings();
        String sql = boundSql.getSql().replaceAll("[\\s]+", " ");
        if (parameterMappings.size() > 0 && parameterObject != null) {
            TypeHandlerRegistry typeHandlerRegistry = configuration.getTypeHandlerRegistry();
            if (typeHandlerRegistry.hasTypeHandler(parameterObject.getClass())) {
                //sql = sql.replaceFirst("\\?", getParameterValue(parameterObject));
                //todo:????
                sql = sql.replaceAll("\\?", getParameterValue(parameterObject));

            } else {
                MetaObject metaObject = configuration.newMetaObject(parameterObject);
                for (ParameterMapping parameterMapping : parameterMappings) {
                    String propertyName = parameterMapping.getProperty();
                    if (metaObject.hasGetter(propertyName)) {
                        Object obj = metaObject.getValue(propertyName);
                        sql = sql.replaceFirst("\\?", getParameterValue(obj));
                    } else if (boundSql.hasAdditionalParameter(propertyName)) {
                        Object obj = boundSql.getAdditionalParameter(propertyName);
                        sql = sql.replaceFirst("\\?", getParameterValue(obj));
                    }
                }
            }
        }
        return sql;
    }

    public Object plugin(Object target) {
        return Plugin.wrap(target, this);
    }

    public void setProperties(Properties properties0) {

    }
}